Booked for a three month stay, Orbital ATK’s Cygnus OA-7 cargo spacecraft arrived at the International Space Station on Saturday, hauling nearly 3,500 Kilograms of supplies to the orbiting laboratory to support dozens of scientific experiments, ISS maintenance, and an unprecedented CubeSat constellation for the exploration of a largely unknown region of Earth’s atmosphere.

A critical science-enabling cargo delivery to the International Space Station was successfully sent on its way on Tuesday when a United Launch Alliance Atlas V rocket rumbled away from Florida’s Cape Canaveral to place the Cygnus cargo spacecraft into orbit.

Orbital ATK will call upon ULA’s Atlas V rocket one more time to deliver cargo to the International Space Station in the spring of 2017 to ensure the orbiting complex remains in a comfortable resupply situation and can operate at full capacity through what is shaping up to be a busy year for the ISS program.

An Atlas V rocket blasts off from Space Launch Complex 41, Cape Canaveral on December 6, 2015 on the launcher’s first mission in support of the International Space Station, lifting the Cygnus OA-4 resupply craft into orbit.

An Atlas V rocket blasts off from Space Launch Complex 41, Cape Canaveral on December 6, 2015 on the launcher’s first mission in support of the International Space Station, lifting the Cygnus OA-4 resupply craft into orbit.

The Cygnus spacecraft is back in orbit for its return to flight mission to the International Space Station, coming back from last October’s Antares launch failure. Orbital ATK’s resupply spacecraft lifted off on Sunday atop an Atlas V rocket as the first in a pair of interim missions contracted to United Launch Alliance until the modified Antares rocket will be ready for flight using a new main engine system.

The return to flight of the Cygnus spacecraft and the very first mission of an Atlas V rocket in support of the International Space Station will have to wait at least one more day after bad weather kept the rocket on the ground on Thursday.

A United Launch Alliance Atlas V 401 rocket has been rolled to its launch pad at Cape Canaveral Air Force Station in preparation for the rocket’s first mission in support of the International Space Station, launching the Cygnus OA-4 resupply mission.